Apparatus for indicating the displacement of rotary bodies.



w a: @1229. v APPARATUS FOR INDIGATING THE DISPLAOEMENT OF ROTARY BODIES.

APPLICATION FILED MAR. 31,1913.

1,098,76Q, Patented June 2,191

ATTRmEV UNITEE STATEt-i PATEhi l QFFEQQQ WILLIAIII C. REED, DIE PITTSFIELD, MASSACHUSETTS.

APPARATUS FOR ENDICATING THE DISPLACEMENT OF ROTARY BODIES.

Specification of Letters Patent.

Patented June 3, 1914.

Application filed March 31 1913. Serial No. 757,825.

with reliri'enre to a separate element and \VllCl'Qlli'll, ml to the or t ion and utilit iii to ,llt'lill mechanism that the rotary e ement he wustantly maintained in true nguinal 'iosition without substantial variation or displacement. By means of my invention any such displacaanent is in stantly int other rotary element may be. intimately readjurded to its noiinal posit-ion Having referred to the general character and purpose of my invention, I will proceed to describe a specific useful tor-1n of embodinicut thereof in connection with the ac ompanyine dr in i1lf"" wherciri- Figure l is a view in elevation of ti c device operatively mounted with relation to a rotary shaft. the relative position, or the .parts afl'ceted by downward disphutemcnt of the shaft being indicated in dotted lines; Fig. 2, a similar view of the same, the relative position of the parts affected by spreading the calipers being indicated in dot-ted lines, and Fig. 3, a detail inverted plan view of the invention, showing the calipers cut away tcrmiintlly.

The invention essentially couiprises a pair or caiipecompasses nivotally mounted on a fixed support, and a movnhlc "indicating element for :uiljustincnt by the calipers with reference to a given mark.

As shown, the calipers l 1, are pivotally secured together by a fulcrum screw 2 attachcd to the outer cndoi a fixed arm 3 projcct-ine laterally from a bar 4-, which is sccurcd in rigid upright position on the pillow block or shaft support 5, preferably by the screws (3,

1 1, are provided with runners 7, 7, which are adapted to engage opposite sides oi. the

licated and by its aid the shaft or The outer ends of the calipers" shaft 8, or other rotary element, whose position is to be il'n'lieatedi The inner ends of the calipers 1 1, are extended beyond the point of pivotal en igcment at l to form invertedcurred arms or qinnlrants J, i), which are inorahly secured together under tension by a coil sp ing 10 secured. to studs provided on s :l.'e"- .-'s ll 11, arranged at op 'iosite points on the arm 9 9, the object. of the spring; being to keep the outer ends of the calipers L l nori'na ly in engagement with the shat't P'v v.tlly attached to the arms in J. by the screws 11 ll, are separate uuarhu nt- 1i: having their opp We end: pn'otaii i secured together by a threaahal pin 1- and forming a continuous ring with i Mounted on one he lzxalr: oi? the our i is shown a ertica arinuged index or pointer '15 adapted to mine on the screw on the bar prefpivot ll which is proride l crahly in the same horizontal plane with screw 2. lQ-nterally pro ided on the pointer 15 at a point opposite the pin '3 auarni or swell 16 extending toward the segments l2 l2, and inovahly ronuetied by a screw l8 to the inner end or? a bar ll. which oxtends across the ring -ti l-med by the segments 12, 12, and arms 9, J, and is pivoted at its opposite end to the screw The bar 19 is provided with a longitudinally extended slot 20 to receive the pin 13 carrying a knurl nutll, the slot being adapted to allow play ot the pin therein when the calipers 1, 1, are moved relatively to each other, while the nut 21 is employed to clamp the segments 12, 12 to the bar ill to lix the relatii'e positions of the calipers l, .l. The bar is further provided with a relatively smaller slot '17 to l'tlCOlv't. the screw 18. which carries a take-up in the form of a bushing or collar 22 interposed between the bar 19 and the arm 16 of the pointer '15. I further provide at the upper end of the bar 4 and on oppo' site sides thereof curved lateral extensions 23, having impressed thereon suitable indicating marks 24: etc. graduated oneither side of the bar 4 from a central. point 0 and affording a scale for indicating the. move ments of the calipers 1, 1, which are actuated by any displacement of the shaft 8.

In operation, the outer ends of the calipers 1,1, are spread apart to receive the shaft 8 (see Fig. 1-) and then released under the tension of the spring 10, which causes reninin in engagement ii-ho runners 7, '2'} to 1011 causes t (snow of the calipers drawlng too J by means oi:

Ward displacement; of the oinift Wlii cause on o olipers;

1, to 0. low slightly on. tho

no. i

,v ondiiit the 171113: 19 ounso ho pointer 15 to away from zero over or do of tho itod in do pincomijio i: tho Shiili'i) iii) my now ho 1m do if I end of .i

1 chum-- l" adopted to engage opposite points on a roizaii'y body for support with relation thereto, moans for permanently but adjustobly fixing the re ,ivo angular position of the arms to move in. synohronism. in. the same direction,

indie-u g diotilmzomont, of the rotary from its time position.

i. A. dovico of tho class described comprising a fixed support, :1 pair of oi'ossed com pass iUJIHS pivoted together to the support, an index pivoted to the support and havin a :Er-eo end, a bar, moons securing one on of tho bar in fixed relation to tho compass arms and sopamto means for pivotally connecting tho oppooito end of the bar to the index.

A dovioo of the class described, comprising :1, support, a pair of crossed compass *d oi; their inner ends with inarms no'v voi ooiy ouxrvod extensions, spring means for 16i, ir -iv connochn the extensions a bar J i a, a

ii at one ond to tho pivotal point of ML'GIWES arms and extending between ilfiijUStfLifriB moans .movidod h, ons for rotating the inn with in, and an index arm pivoted "Oii'i; and having 11 free end, said .1 connected to the bar.

JIIHMKU'I': of a support, :1 ring 'pporrt and comprising oopn- (ions pivot-oily scoured to- Hie pivots] point of tho ring i-nt'h one of the pivotal "mints of tho od'i; :ont ends oi two of -mziio1m; lowing dim-ngiog arms projectin: 1 'otaii 1 int of tho ring,

SEEN

vom i; #1! nooivoiod of; ono and to a s\1p poi-i. 11d moi-it" the ring and having a free ond o mioti'io hm." (mending across the ring and having on and pivoted to the iniiox Lino nod having i op )osito ond pivoted to tho piwotzii point of him ring, said bur having; :1 slot, o pin rovidvd on. the ring at 100 o poin; winoiciont with the point of oonneciion of ifno ring; FGCtiUUS, adjacent the index arm. and T:{1S5i11g thri'iogh said slot of. said bar, and o, spring secured to opposite points of tho ring transversely of the plane of the 1015 half.

In testimony whereof I hereto afiix my signature in presence of two Witnesses.

WILLI.A1\![ REED.

i viiunossos J no, J. W 111 ITL ism, WILLIAM: E, in

s in addition no the 'foregoingi mfor 

